Nature of organic diluent:

The nature of organic diluent vis-a-vis the polarity and dielectric constant, is reported to the affect the extraction. The effect is certainly complex, depending to an unknown extent, on the dielectric constant, dipole moment and polarizability of the diluent and the complex and the hydrogen bond donor and acceptor abilities. It has been shown that the extent of polymerization of the extractants is related to its interaction with the diluent. And, this in turn affects the extraction of the metallic species. The effect of the diluent may be drastic enough to affect the composition of the organic phase complex. In diluents where the extractant is predominantly monomeric, the composition of the complex is invariably MX_m rather than M(X HX)_m.